Title: Unsupported Ni-Mo Composite Oxide Catalysts Prepared by Sol-Gel Method for Hydrodeoxygenation
Abstract: Unsupported Ni-Mo composite oxide catalysts were successfully prepared by sol-gel method with citric acid as a complex agent,and characterized by using N2 adsorption-desorption,X-ray diffraction(XRD) and temperature programmed desorption(NH3-TPD).The effects of Mo/Ni molar ratio and reaction temperature on the hydrodeoxygenation activity of the catalysts were investigated emphatically with acetic acid and phenol as probe compounds.The results showed that the catalysts prepared by sol-gel method could possess higher specific surface area and the double mesoporous structure.The β-NiMoO4 phase detected by XRD was mainly in the catalysts.In the range of Mo/Ni molar ratio 0~0.8,the pore volume,the specific surface area,the middle strong acid strength and hydrodeoxygenation activity of the catalyst were non-monotonic with the increase of Mo/Ni ratio.The catalyst with Mo/Ni ratio 0.6 exhibited the highest hydrodeoxygenation activity.At 0.3 MPa and 210℃ the deoxygenation rate of the phenol and at 0.3 MPa and 270℃ the deoxygenation rate of acetic acid were 99.9% and 99.0%,respectively.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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